Pennsylvania Military Museum - July 21 & 22 – “VIETNAM Revisited Living History Combat Bivouac” – Living historians bivouac (encampment) on the grounds of the Pennsylvania Military Museum portraying the combat soldier of the Vietnam era in Southeast Asia. Daily programs include accompanying squads on Recon Patrols and a tactical patrol ambush demonstration at 1:30 p.m. Bivouac opens at 10 a.m.